'Number four has arrived!' David Tennant reveals that he and his wife Georgia Moffett have welcomed a baby girl

But on Tuesday, David Tennant revealed that he and wife Georgia Moffett have welcomed a new addition - a baby girl.

The Broadchurch star confirmed the exciting news during a hosting stint on the Christian O'Connell Breakfast Show on Absolute Radio.

Scroll down for video

Breaking news! David Tennant revealed during a hosting stint on the Christian O'Connell Breakfast Show on Absolute Radio that he and wife Georgia Moffett have welcomed a baby girl

David - who has three children, daughter Olive, four, two year-old son Wilfred and son Ty, 13, who the actor adopted when the couple married - confirmed the arrival of their little girl when O'Connell asked him about his growing 'brood'.

Share this article

Christian continued: 'Wow, what is it, like The Waltons round there at The Tennant household?'

David laughingly added: 'I know, it's getting a bit ... it's a bit of a brood!'

New addition: David has three children, daughter Olive, four, two year-old son Wilfred and son Ty, 13, who the actor adopted when the couple married

Radio presenter Christian - who was co-hosting his show with the former Doctor Who star - went on to joke that the busy actor is like a travelling serviceman who pops home every now and then for 'amorous' nights in with his wife.

He then quizzed the actor on the family's Christmas plans, to which David quipped: 'It certainly is (busy), a sleepless Christmas I suspect!'

David didn't reveal any further details about his baby girl, such as her name or date of birth but sounded delighted when he stated he and Georgia, 30, have now 'got two of each'.

Doting parents: David didn't reveal any further details about his baby girl, such as her name or date of birth but sounded delighted when he stated he and Georgia, 30, have now 'got two of each'

Pals: Radio presenter Christian - who was co-hosting his show with the former Doctor Who star - made plenty of jokes about David's lack of sleep

Christian though couldn't resist making another gag at David's expense, describing him as having the 'look of a new dad ... haunted' and stating that he could see the strain in his 'eyes'.

David's wife Georgia gave birth to her son Tyler in 2002, when she was 17. She brought him up alone and has never publicly revealed who the father is but David adopted Ty shortly after the couple welcomed their daughter Olive, with the star saying at the time:

'My baby is almost a year old and I adopted my wife's boy last year as well so I became a father twice in six months - that's got to be something of a record hasn't it?'

Prior to dating him, the actress revealed a soft spot for David, gushing in an interview: 'David is dishy, isn't he? He's not only a good-looking but he is such a lovely, sweet guy.'

Busy time: As well as juggling his busy acting career, David is now a proud father of four

The couple met when Georgia had a guest role in Doctor Who'opposite David in the 2008 episode The Doctor's Daughter.

The family's connection to the BBC One sci-fi show is deep-rooted as Georgia's father Peter Davison played the titular Time Lord between 1981 and 1984.

Davison has said of his daughter's relationship with Tennant: 'It's great because David is a genuinely nice guy.

'I'm delighted Georgia has found happiness because she hasn't always had an easy life.'

David's Tenth Doctor and Peter's Fifth Doctor even appeared opposite each other in the Time Crash mini-episode for Children In Need in 2007.

Love on set: The couple met when Georgia had a guest role in Doctor Who opposite David in the 2008 episode The Doctor's Daughter